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HID Current Draw??

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Old Oct 17, 2008 | 07:11 AM
  #1  
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Default HID Current Draw??

Anyone know the current draw on the Harley HID headlight?

Need to figure out if it's time to switch over to LED brake & turn signals.

Thanx
 
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Old Oct 17, 2008 | 07:16 AM
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HID is less draw than the standard headlight, but the igniter does draw a lot when first turning on the bike.
 
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Old Oct 17, 2008 | 07:18 AM
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Originally Posted by Superglide 04
HID is less draw than the standard headlight, but the igniter does draw a lot when first turning on the bike.
exactly... you shouldnt need led's unless your charging system is already taxed
 
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Old Oct 17, 2008 | 07:18 AM
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Thats the way I understand it.
 
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Old Oct 17, 2008 | 10:19 AM
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Default a 35 watt

I senn HID's but not Harley type because they have only low beam and they are very expensive. In my unit a 35 watt kit draws 2.7 amps when warmed up but I have measured 2.2 amps fullly functioning. I do not know if this helps you.
 
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Old Oct 17, 2008 | 10:27 AM
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Default Ohm Law

The law is PIE: Power (P) equals Current (I) times Voltage(E).

So if the bulb is 55W and the voltage we know is 12V, then the current is .....

P(55W)=I(?)times E(12V)
55W=12(I)
I=55W/12V
I=4.58 Amps. Simple
 
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Old Oct 17, 2008 | 12:02 PM
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Thanks guys..
GGC - Nice - you're one glow rail up on me!

FastHarley.. it's not a question of me changing to an HID, I already have the harley unit on the bike - it's got seperate reflectors for high and low beam.

Sandcrab - that law doesn't give me the answer for the HID system, since there's no wattage listed for the bulb. There's a ballast and an ignitor for the xenon tube.... I was looking for the current draw of the ballast.

I'm going to switch the running/turnsignals over to LED, since I added the 50 watt driving lights for nighttime - the ol night vision isn't what it used to be!
 

Last edited by HawgriderPa; Oct 17, 2008 at 12:04 PM.
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Old Oct 17, 2008 | 12:59 PM
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Originally Posted by HawgriderPa
Thanks guys..
GGC - Nice - you're one glow rail up on me!

FastHarley.. it's not a question of me changing to an HID, I already have the harley unit on the bike - it's got seperate reflectors for high and low beam.

Sandcrab - that law doesn't give me the answer for the HID system, since there's no wattage listed for the bulb. There's a ballast and an ignitor for the xenon tube.... I was looking for the current draw of the ballast.

I'm going to switch the running/turnsignals over to LED, since I added the 50 watt driving lights for nighttime - the ol night vision isn't what it used to be!
Please re-read the post. I answered the question by saying mine unit draws 35 watts @ 2.7 amps. I do not know what HD has for a system or if it is the usual 2.7amp 35 watt system common in HID. That is the answer you asked.
 
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